<template>
    <transition name="drop">
        <div class="top-tip" v-show="showFlag">
            <slot>
            </slot>
        </div>
    </transition>
</template>

<script type="text/ecmascript-6">
export default {
  props: {
      delay:{
          type:Number,
          default:1000
      }
  },
  data() {
    return {
      showFlag: false,
      timer: {}
    };
  },
  methods: {
    show() {
      this.showFlag = true;
      clearTimeout(this.timer);
      this.timer = setTimeout(() => {
        this.hide();
      }, this.delay);
    },
    hide() {
      this.showFlag = false;
    }
  }
};
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
@import '~common/stylus/variable';

.top-tip {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 500;
    background: $color-dialog-background;

    &.drop-enter-active, &.drop-leave-active {
        transition: all 0.3s;
    }

    &.drop-enter, &.drop-leave-to {
        transform: translate3d(0, -100%, 0);
    }
}
</style>
